"Study without reflection is a waste of time; reflection without study is dangerous."

-Confucius

Don't study blindly.

Ask yourself, why are you studying? What is your goal? What motivates you to study? or who? Do you love what you are doing? Will this make you happy in the long run?

Diligence is love of work. It is not the same with hardwork.

(notice here that work also includes study)

Are you diligent or are you just hardworking?

If you do not reflect, there will be no action. Thoughts without actions are pointless. Selfish creature, always thinking of yourself. What use has your intellect if you shall not use it for your fellow men?

Learn to do what you love and love what you do, but only after knowing what love is.